package com.nowcoder.code.lcof;

public class JZ65 {

    public static void main(String[] args) {

        for (int i = 1; i <= 10; i++) {
            int sum = 0;
            for (int j = 1; j <= i; j++) {
                sum = sum + j;
            }
            System.out.println(i + ":" + sum);
        }


    }


    public int Add(int num1,int num2) {
        
        return 0;
    }


}
